This was 20.5 percent higher than the state average of 46.3 percent. In 2020 the total municipality population reached 353.
96.5 percent of the population had at least a high school diploma or the equivalent.
Degree distribution in New Suffolk for 2020*
| Degree | Number of people | Percentage of population |
|---|---|---|
| No degree | 10 | 3.5 |
| Regular high school diploma | 40 | 14.1 |
| GED or alternative credential | 0 | 0 |
| Some college, less than 1 year | 20 | 7.1 |
| Some college, 1 or more years, no degree | 24 | 8.5 |
| Associate's degree | 13 | 4.6 |
| Bachelor's degree | 125 | 44.2 |
| Master's degree | 37 | 13.1 |
| Professional school degree | 14 | 4.9 |
| Doctorate degree | 0 | 0 |
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